Dumbbell and exercise system having dumbbell

ABSTRACT

The present application discloses a dumbbell. The dumbbell includes: a hand-hold assembly, having a first channel and two opposite ends; two weight adjusting assemblies, rotatably connected with two ends of the hand-hold assembly respectively and rotated relative to the hand-hold assembly about a rotation axis; a plurality of weights, supported by the weight adjusting assembly; wherein, each weight adjusting assembly comprises a first cover connected with the end of the hand-hold assembly, a supporting base fixed to the first cover and having an upper sub-base and a lower sub-base spaced apart from the upper sub-base for forming a receiving space, and an engaging tube extending from the first channel into the receiving space and moved toward or away from the hand-hold assembly so that the engaging tube locks the weights or unlocks the weights.

FIELD OF THE PRESENT DISCLOSURE

The present application relates to the technical field of an exerciseequipment, in particular to an adjustable dumbbell.

DESCRIPTION OF RELATED ART

The dumbbell is a widely used fitness equipment that can be used totrain arm muscle strength. However, a number of weights to be liftedwill depend upon the exercise objectives of the user.

The dumbbell in the prior art can be adjusted by increasing or reducingthe number of weights. However, it is inconvenient for users to lift orremove the weights from the dumbbell.

Therefore, a new dumbbell and an exercise system having the dumbbell aredesired to solve the above mentioned problem.

SUMMARY

In one aspect, the present invention discloses a dumbbell. The dumbbellcomprises: a hand-hold assembly, having a first channel and two oppositeends; two weight adjusting assemblies, connected with two ends of thehand-hold assembly respectively and rotated relative to the hand-holdassembly about a rotation axis; a plurality of weights, supported by theweight adjusting assembly; wherein, each weight adjusting assemblycomprises a first cover rotatably connected with the end of thehand-hold assembly, a supporting base fixed to the first cover andhaving an upper sub-base and a lower sub-base spaced apart from theupper sub-base for forming a receiving space, and an engaging tubeextending from the first channel into the receiving space and movedtoward or away from the hand-hold assembly so that the engaging tubelocks the weights or unlocks the weights.

In another aspect, the present invention discloses an exercise system.The exercise system comprises: a dumbbell comprising: a hand-holdassembly, having a first channel and two opposite ends; two weightadjusting assemblies, connected with two ends of the hand-hold assemblyrespectively and rotated relative to the hand-hold assembly about arotation axis; a plurality of weights, supported by the weight adjustingassembly; wherein, each weight adjusting assembly comprises a firstcover rotatably connected with the end of the hand-hold assembly, asupporting base fixed to the first cover and having an upper sub-baseand a lower sub-base spaced apart from the upper sub-base for forming areceiving space, and an engaging tube extending from the first channelinto the receiving space and moved toward or away from the hand-holdassembly so that the engaging tube locks the weights or unlocks theweights; a dumbbell seat, configured for carrying the dumbbell.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an schematic view of an exercise system in accordance with anembodiment of the present disclosure.

FIG. 2 is a perspective view of a dumbbell with some weights removed inaccordance with the embodiment of the present disclosure;

FIG. 3 is an exploded view of the dumbbell shown in FIG. 2;

FIG. 4 is a cross-sectional view of the dumbbell shown in FIG. 2.

FIG. 5A and FIG. 5B are schematic perspective views of an engaging tubeof the dumbbell shown in FIG. 2.

FIG. 6 is a schematic perspective view shown a hand-hold assembly of thedumbbell shown in FIG. 2.

FIG. 7A and FIG. 7B are schematic perspective views of a first cover ofthe dumbbell shown in FIG. 2.

FIG. 8 schematically shows a connecting rod, a hand-hold assembly, anengaging tube shown in FIG. 2 assembled with each other.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENT

In the following, the technical schemes in the embodiments of thepresent application will be described clearly and completely withreference to the drawings of the embodiments of the present application.Obviously, the described embodiments are only a part of embodiments ofthe present application, not all of the embodiments. Based on theembodiments in the present application, all other embodiments obtainedby ordinary technicians in the field without creative labor are withinthe scope of protection in the present application.

Please referring to FIGS. 1 to 8, a dumbbell 100 according to thepresent application includes a hand-hold assembly 10 having two oppositeends 112, two weight adjusting assemblies 30 connected respectively tothe ends of the hand-hold assembly 10, and a plurality of weights 90detachably connected with the weight adjusting assembly 30. The weightadjusting assembly 30 is rotated relative to the hand-hold assembly 10about an axial axis X.

The hand-hold assembly 10 includes a hollow hand-hold tube 11 having theopposite two ends 112 and two connection members 12 connectedrespectively with the two ends 112 of the hand-hold tube 11. Thehand-hold tube 11 further includes a middle portion 111 disposed betweenthe two ends 112. The hand-hold tube 11 further includes a first channel110 passing therethrough. The hand-hold assembly 10 may include a softsleeve, such as silicone sleeve, and the soft sleeve is sleeved on themiddle portion 111 of the hand-hold tube 11. Each of the connectionmembers 12 includes a carrying disk 121 sleeved around the end 112 ofthe hand-hold tube 11 and secured to the hand-hold tube 11 and anengaging ring 122 protruding from the carrying disk 121 in the axialdirection toward the weight adjusting assembly 30. The engaging ring 122has a ring shaped base wall 1221 secured to the carrying disk 121 and aplurality of side walls 1222 protruding in the axial direction andspaced apart from each other in an interval space 1223. A plurality ofreceiving holes 1224 are formed in the base wall 1221. In thisembodiment, the receiving holes 1224 are defined corresponding to theside walls 1222 one by one.

The hand-hold assembly 10 further includes a pair of first elasticplungers 13. Each of the first elastic plungers 13 is mounted on the end112 of the hand-hold tube 11 with a ball head 131 extending into thefirst channel 110.

The weight adjusting assembly 30 includes a supporting base 31 forsupporting the weights 90, a first cover 32 rotatably connected with thecarrying disk 121, and an engaging tube 35 movable axially upon rotationof the first cover 32 about the rotation axis X.

The supporting base 31 is fixed to the first cover 32 via screw. Thesupporting base 31 has an upper sub-base 311, a lower sub-base 312spaced from the upper sub-base 311 for forming a receiving space 313,and a fixing part 316 connecting both the upper sub-base 311 and thelower sub-base 312 to the first cover 32. The fixing part 316 has afirst through hole 3161 communicating with the receiving space 313. Eachof the upper sub-base 311 and the lower sub-base 311 has a guiding slot315 extending in the axial direction formed at a side close to thereceiving space 313 and communicating with the receiving space 313. Theupper sub-base 311 has a plurality of first partitioning fins 3111extending from the upper sub-base 311 outwardly. The first partitioningfins 3111 are spaced apart from each other to form a plurality of firstfin-free segments 3112. The lower sub-base 312 has a plurality of secondU-shaped partitioning fins 3121 extending from the lower sub-base 312outwardly. The second partitioning fins 3121 are spaced apart from eachother to form a plurality of second fin-free segments 3122. The weight90 is engaged with the first fin-free segment 3112 and the secondfin-free segment 3212.

The engaging tube 35 has an inner wall 353 and an outer wall 354opposite to the inner wall 353. The engaging tube 35 is hollow shaped. Asecond channel 3530 is formed in the inner wall 353, and a spiral groove352 is formed on the outer wall 354. The engaging tube 35 has a pair ofprotruding parts 351 formed at an end of the engaging tube 35. One endof the engaging tube 35 is received in the first channel 110 and theother end of the engaging tube 35 extends into the receiving space 313with the protruding parts 351 inserted into the guiding slots 315respectively. The support base 31 rotates about the rotation axis X, andthe engaging tube 35 also rotates by the protruding parts 351 co-rotateswith the lower sub-base and upper sub-base. The engaging tube 35 canmove away from or toward the hand-hold tube 11 in the receiving space313 along the rotation axis X while the first cover 32 and the supportbase 31 rotates about the rotation axis. The first elastic plunger 13 isinserted into the spiral groove 352, and when the engaging tube 35co-rotating with the support base 31 and the first cover 32, the firstelastic plunger 13 would react on the engaging tube 35 so that a forceis generated to drive the engaging tube 35 moving along the rotationaxis.

The first cover 32 has a center hole 320 formed therein. The end 112 ofthe hand-hold tube 11 passes through the center hole 320. The firstcover 32 has an annular wall 321 defining an annular space and aseparating plate 322 connected with the annular wall 321 and configuredto divide the annular space into a first recess 323 and a second recess324. The center hole 320 is formed in the separating plate 322. Thecarrying disk 121 and the engaging ring 122 are received in the firstrecess 323 with the carrying disk 121 abutting against the annular wall321.

The supporting base 31 is received in the second recess 324 and fixed tothe separating plate 322 via screws. The first cover 32 further includesa pair of second elastic plungers 326 fixed to the separating plate 322and received in the first recess 323. The second elastic plungers 326are mounted on both sides of the center hole 320 and symmetrical aboutthe center hole 320. When the first cover 32 rotates relative to theengaging ring 122, the second elastic plunger 326 is received in thereceiving hole 1224 while the second elastic plunger 326 align with thereceiving hole 1224 for indicating that a right position reached. Whenthe first cover 32 is rotated to an angular position where the secondelastic plunger 326 is axially aligned with the receiving hole 1224, aclicking sound is generated by the second elastic plunger 326 receivedin the receiving hole 1224.

The first cover 32 further includes a second through hole 327 formed inthe annular wall 321, a third through hole 328 formed in the separatingplate 322 and a mounting groove 329 formed on the separating plate 322and located at the first recess 323. The second through hole 327communicates with the third through hole 328 and the mounting groove329.

The weight adjusting assembly 30 further includes an elastic lockingassembly 37 for stopping or releasing the first cover 32 rotationrelative to the hand-hold tube 11 about the rotation axis. The elasticlocking assembly 37 includes a pressing block 371, an elastic member 372and a fastening member 373. The pressing block 371 is T shaped, has afirst block 3712 contacted by user, an engaging block 3713, and aconnecting part 3714 with an avoiding space 3711 formed therein. Thepressing block 371 is inserted into the second through hole 327 and thethird through hole 328; the elastic member 372 is mounted in themounting groove 329. One end of the elastic member 372 abuts against theengaging block 3713 and the other end thereof abuts against the wall ofthe mounting groove 329. The pressing block 371 can be moved along adirection perpendicular to the rotation axis under a force applied bythe elastic member 372 so that the engaging block 3713 can be insertedinto the third through hole 328 or removed from the third through hole328.

The fastening member 373 includes cover body 3731 and a pair of fingerportions 3732 extends bently from the cover body 3731. The fingerportions 3732 inserted into the second through hole 327 with theconnecting part 3714 sandwiched therebetween. The cover body 3731 coverson the mounting groove 329, and is pressed to the separating plate 322by the fixing part 316 of the support base 31.

The fastening member 373 covers on the mounting groove 329 forpreventing the pressing block 371 and the elastic member 372 fromdetached to the first cover 32. When the engaging block 3712 extendsfrom the third through hole 328 into the interval space 1223 of theengaging ring 1222. The first cover 32 cannot be rotated relative to thehand-hold tube 11. When users presses on the pressing block 371 so thatthe avoiding space 3711 face the engaging ring 122, the first cover 32can rotate relative to the hand-hold tube 11. The elastic member 372 maybe a spring.

The weight 90 includes a pair of vertical grooves 911 and an arc groove912. The arc groove 912 communicates with the vertical grooves 911. Awidth of the arc groove 912 is greater than that of the vertical groove911. The first fin-free segment 3112 is received in one vertical groove911, and the second fin-free segment 3122 is received in anothervertical groove 911 and the engaging tube 35 is used for inserting intothe arc groove 912 for locking the weight 90.

In operation, when users want to remove some weights 90 supported by thesupporting base 31 and locked by the engaging tube 35, users need torotate the first cover 32, the engaging tube 35 co-rotates with thefirst cover 32 and moved in the axial direction toward the hand-holdtube 11, the engaging tube 35 moved and out of the arc groove 912 of theweights 90. Thus, the weight 90 are released and can be removed from thesupport base 31. When users want to increase some weights 90 to thesupporting base 31, users need to rotate the first cover 32 in theopposite direction, the engaging tube 35 co-rotates with the first cover32 and moved in the axial direction away from the hand-hold tube 11,then the engaging tube 35 inserted into the arc groove 912 to lock theincreased weights 90.

In other embodiment, the weight adjusting assembly 30 may include asecond cover 33 and a strength block 39 received in the second cover 33.One end of the supporting base 31 is fixed to the first cover 32 and theother end of the supporting base 31 is fixed to the second cover 33 viathe strength block 39.

In other embodiment, the dumbbell 100 further includes a connecting rod20 having a smooth outer surface, the connecting rod 20 passes throughthe first channel 110 and the second channel 3530. Both ends of theconnecting rod 20 are fixed to the strength blocks 39. With suchconfiguration, the whole strength of the dumbbell can be enhanced andmore and more weights can be supported.

In other embodiment, the weight adjusting assembly 30 may furtherinclude a third cover 34, the third cover 34 connected between the firstcover 32 and the second cover 33 to form an U shaped cover body, whichcan enhance the whole strength of the dumbbell 100.

In this embodiment, an exercise system 300 may further includes adumbbell seat 200. The dumbbell seat 200 is used for carrying thedumbbell 100. The dumbbell seat 200 includes a pair of weight carryingparts 201 corresponding to the weight adjusting assembly 30 and a middlepart 202 located between the weight carrying parts 201. The weightcarrying parts 201 includes a plurality of first slots 2011 forreceiving the weights 90 respectively and a pair of second slots 2012for receiving the first cover 32 and second cover 33 respectively. Thesecond slots 2012 are disposed at both ends of the first slots 2011. Themiddle part 202 is formed as a groove.

The above description is only about some embodiments of the presentapplication, and is not intended to limit the patent scope of thepresent application. Any equivalent structure or equivalent principletransformation made by using the description and drawings of the presentapplication, or directly or indirectly applied in other relatedtechnical fields, are similarly included in the patent protection scopeof the present application.

What is claimed is:
 1. A dumbbell, comprising: a hand-hold assembly,having a first channel and two opposite ends; two weight adjustingassemblies, connected with the two opposite ends of the hand-holdassembly respectively and rotated relative to the hand-hold assemblyabout a rotation axis; a plurality of weights, supported by the weightadjusting assembly; wherein, each weight adjusting assembly comprises afirst cover rotatably connected with one of the two opposite ends of thehand-hold assembly, a supporting base fixed to the first cover andhaving an upper sub-base and a lower sub-base spaced apart from theupper sub-base for forming a receiving space, and an engaging tubeextending from the first channel into the receiving space and movedtoward or away from the hand-hold assembly so that the engaging tubelocks the weights or unlocks the weights, the hand-hold assemblycomprises a hand-hold tube and a pair of connection members connectedrespectively with the ends of the hand-hold assembly; the first coverhas a center hole; each of the two opposite ends of the hand-holdassembly passes through the respective center hole, the hand-holdassembly further comprises a pair of first elastic plungers, the firstelastic plungers are respectively mounted on the two opposite ends ofthe hand-hold assembly and extend into the corresponding first channel.2. The dumbbell according to claim 1, wherein, the engaging tube has aninner wall and an outer wall opposite to the inner wall, a secondchannel formed in the inner wall, and a spiral groove is formed on theouter wall; each of the pair of first elastic plungers is inserted intothe respective spiral groove.
 3. The dumbbell according to claim 2,wherein, each of the weight adjusting assemblies further comprises asecond cover and a strength block received in the second cover; one endof the supporting base is fixed to the first cover and the other end ofthe supporting base is fixed to the strength block.
 4. The dumbbellaccording to claim 3, wherein, each of the weight adjusting assembliesfurther comprises a third cover connecting the first cover to the secondcover.
 5. The dumbbell according to claim 4 further comprising aconnecting rod passing through the first channel and the second channelwith both ends thereof fixed to the strength blocks.
 6. The dumbbellaccording to claim 1, wherein, each of the pair of connection memberscomprises a carrying disk and an engaging ring protruded from thecarrying disk in g rotation axis direction toward the first cover; thefirst cover assembled with the carrying disk and abuts against thecarrying disk.
 7. The dumbbell according to claim 6, wherein, the weightadjusting assembly further comprises an elastic locking assembly mountedon the first cover, the elastic locking assembly comprises a pressingblock, an elastic member with one end connected with the pressing blockand the other end abuts against the first cover; the engaging ringcomprises a plurality of interval space; the pressing block is pushedinto the interval space so that the first cover stops rotating; or, thepressing block is not pushed into the interval space so that the firstcover rotates about the rotation axis.
 8. The dumbbell according toclaim 7, wherein, the weight adjusting assembly further comprises asecond elastic plunger mounted on the first cover; the engaging ringfurther comprises a receiving hole for receiving the second elasticplunger while the first cover rotates to a right position where thesecond elastic plunger is axially aligned with the receiving hole. 9.The dumbbell according to claim 1, wherein, each of the upper sub-baseand the lower sub-base has a guiding slot, the guiding slots are formedon a side of the upper sub-base and a side of the lower sub-base closeto the receiving space; the engaging tube has two protruding partslocated at an end thereof, the protruding parts are inserted into theguiding slots respectively.
 10. An exercising system, comprising: adumbbell comprising: a hand-hold assembly, having a first channel andtwo opposite ends; two weight adjusting assemblies, rotatably connectedwith the two opposite ends of the hand-hold assembly respectively androtated relative to the hand-hold assembly about a rotation axis; aplurality of weights, supported by the weight adjusting assembly;wherein, each weight adjusting assembly comprises a first coverrotatably connected with one of the two opposite ends of the hand-holdassembly, a supporting base fixed to the first cover and having an uppersub-base and a lower sub-base spaced apart from the upper sub-base forforming a receiving space, and an engaging tube extending from the firstchannel into the receiving space and moved toward or away from thehand-hold assembly so that the engaging tube locks the weights orunlocks the weights, the hand-hold assembly comprises a hand-hold tubeand a pair of connection members connected respectively with the ends ofthe hand-hold assembly; the first cover has a center hole; each of thetwo opposite ends of the hand-hold assembly passes through therespective center hole, the hand-hold assembly further comprises a pairof first elastic plungers, the first elastic plungers are respectivelymounted on the two opposite ends of the hand-hold assembly and extendinto the corresponding first channel; a dumbbell seat, configured forcarrying the dumbbell.
 11. The exercising system according to claim 10,wherein, the dumbbell seat comprises a pair of weight carrying parts anda middle part located between the weight carrying parts; the weightcarrying parts is configured for carrying the weights and the weightadjusting assemblies.
 12. The exercising system according to claim 11,wherein, the middle part is formed as a groove.